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macvlan: disable LRO on lower device instead of macvlan

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A macvlan device has always LRO disabled so that calling
dev_disable_lro() on it does nothing. If we need to disable LRO
e.g. because

  - the macvlan device is inserted into a bridge
  - IPv6 forwarding is enabled for it
  - it is in a different namespace than lowerdev and IPv4
    forwarding is enabled in it

we need to disable LRO on its underlying device instead (as we
do for 802.1q VLAN devices).

v2: use newly introduced netif_is_macvlan()

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kubeček 2013-11-15 06:18:50 +01:00 committed by David S. Miller
parent be9eac4827
commit 529d048954
1 changed files with 5 additions and 0 deletions
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5
net/core/dev.c
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@ -131,6 +131,7 @@
#include <linux/static_key.h> #include <linux/static_key.h>
#include <linux/hashtable.h> #include <linux/hashtable.h>
#include <linux/vmalloc.h> #include <linux/vmalloc.h>
#include <linux/if_macvlan.h>
#include "net-sysfs.h" #include "net-sysfs.h"
@ -1424,6 +1425,10 @@ void dev_disable_lro(struct net_device *dev)
if (is_vlan_dev(dev)) if (is_vlan_dev(dev))
dev = vlan_dev_real_dev(dev); dev = vlan_dev_real_dev(dev);
/* the same for macvlan devices */
if (netif_is_macvlan(dev))
dev = macvlan_dev_real_dev(dev);
dev->wanted_features &= ~NETIF_F_LRO; dev->wanted_features &= ~NETIF_F_LRO;
netdev_update_features(dev); netdev_update_features(dev);